Telemarketers are a scourge on society, but if you’re getting too many telemarketing calls, you can at least reduce how much time you spend on them. When a call comes in, you can always tap the red Decline button, but it’s even faster to press the Sleep/Wake button on...

Although many iOS apps identify phone numbers so you can just tap them to call, that doesn’t always work for a phone number sent to you in a text or email message, or posted on a Web page. Here’s the workaround so you don’t have to memorize the number temporarily or...